What does a women stare?

Sometimes I have seen women stare at you for no apparent reasons. Sometimes they would look in the eyes and would keep doing it occasionally. Sometimes I get uncomfortable when I see it. I wonder whether they are interested in talking or they are doing it for some other reason.

Like @ModernDayWriter said, they have their thoughts in mind or they're daydreaming, so they "impolitely" stare somewhere, and that somewhere happens to be you.
Or they make sure you are not a danger, like @skysnap said.
If a woman likes you, she's likely to smile a lot and she won't keep herself focused on you for too long.
I wondered the same about men staring at me. I will just ignore them.

Hello ajithlal. When someone stared at me, I would feel very uneasy at a young age, but now I would look at the person who stares at me and smile at him or her, saying, "Hi". Maybe it is because I am no younger any more and would do things more bravely than ever. LOL. Take care.